<template>
    <div class="login-container">
      <h2>登录</h2>
      <form @submit.prevent="handleLogin">
        <div class="form-group">
          <label for="username">管理员:</label>
          <input type="text" id="username" v-model="username" required />
        </div>
        <div class="form-group">
          <label for="password">密码:</label>
          <input type="password" id="password" v-model="password" required />
        </div>
        <button type="submit">登录</button>
      </form>
    </div>
  </template>
    
  <script setup>
  import { ref, onBeforeMount } from 'vue';
  import axios from 'axios';
  import { useRouter } from 'vue-router';
  
  const router = useRouter();
  const username = ref('');
  const password = ref('');
  
  // 设置token到localStorage
  function setAuthToken(token, tokenHead) {
    axios.defaults.headers.common['Authorization'] = `${tokenHead} ${token}`;
    localStorage.setItem('authToken', token);
    localStorage.setItem('Bearer', tokenHead);
  }
  
  // 检查localStorage中的token并自动登录
  function autoLogin() {
    const token = localStorage.getItem('authToken');
    const tokenHead = localStorage.getItem('Bearer');
    if (token && tokenHead) {
      //console.log('haha')
      router.push({ name: 'admin' });
    }
  }
  
  // axios响应拦截器
  axios.interceptors.response.use(
    response => {
      // 检查response中是否包含特定的错误信息
      if (response.data && response.data.code === 500 && response.data.message === "未登录") {
        // 这里处理未登录的情况
        localStorage.removeItem('authToken');
        localStorage.removeItem('Bearer');
        router.push({ name: 'admin' });
      }
      return response;
    },
    error => {
      // 检查是否存在error.response
      if (error.response) {
        
      }
      return Promise.reject(error);
    }
  );
  
  // 在组件挂载前调用autoLogin
   onBeforeMount(autoLogin);
  
  const handleLogin = async () => {
    try {
      const response = await axios.post('http://8.219.49.219:8080/onlineShopping/user/login', {
        username: username.value,
        password: password.value
      }, {
        withCredentials: true
      });
      // console.log(response)
      // 检查响应代码是否为200
      if (response.data.code === 200) {
        // 检查data对象中的state属性是否为true
        if (response.data.data.state) {
          // 登录成功，处理token等逻辑
          const token = response.data.data.token;
          const tokenHead = response.data.data.tokenHead;
          // console.log(token + tokenHead);
          // 在这里设置token到localStorage
          setAuthToken(token, tokenHead);
          // console.log('Login successful:', token);
          // 跳转到主页
          router.push({ name: 'admin' });
        } else {
          // 登录失败，处理错误
          console.error('Login failed:', response.data.message);
        }
      } else {
        // 响应代码不是200，处理错误
        console.error('Error:', response.data.message);
        alert('用户名或密码错误')
      }
    } catch (error) {
      // 处理请求错误
      console.error('Error during login:', error);
    }
  };
    </script>
    
    <style scoped>
  .login-container {
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.8); 
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    text-align: center;
    color: #333; 
    background-image: url('/pictures/bg.jpg'); 
    background-size: cover; 
    background-position: center; 
    background-blend-mode: multiply; 
  }
  
  .login-container h2 {
    margin-bottom: 20px;
    font-size: 24px;
    color: #333;
    font-family: 'Roboto', sans-serif; 
  }
  
  .form-group {
    margin-bottom: 20px;
    text-align: left;
  }
  
  .form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 16px;
    color: #666;
  }
  
  .form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    background-color: #f8f8f8; 
    color: #333; 
    box-sizing: border-box;
  }
  
  button {
    width: 100%;
    padding: 12px;
    background-color: #4CAF50; 
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 18px;
    transition: background-color 0.3s ease;
  }
  
  button:hover {
    background-color: #45a049; 
  }
  </style>
    
  